1<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> 2<html lang="en"> 3<head> 4<meta http-equiv="Content-Type" content="text/html; charset=utf-8"> 5<meta http-equiv="Content-Style-Type" content="text/css"> 6<link rel="up" title="FatFs" href="../00index_e.html"> 7<link rel="alternate" hreflang="ja" title="Japanese" href="../ja/putc.html"> 8<link rel="stylesheet" href="../css_e.css" type="text/css" media="screen" title="ELM Default"> 9<title>FatFs - f_putc</title> 10</head> 11 12<body> 13 14<div class="para func"> 15<h2>f_putc</h2> 16<p>The f_putc funciton puts a character to the file.</p> 17<pre> 18int f_putc ( 19 TCHAR <span class="arg">chr</span>, <span class="c">/* [IN] A character to write */</span> 20 FIL* <span class="arg">fp</span> <span class="c">/* [IN] File object */</span> 21); 22</pre> 23</div> 24 25<div class="para arg"> 26<h4>Parameters</h4> 27<dl class="par"> 28<dt>chr</dt> 29<dd>A character to write.</dd> 30<dt>fp</dt> 31<dd>Pointer to the open file object structuer.</dd> 32</dl> 33</div> 34 35 36<div class="para ret"> 37<h4>Return Values</h4> 38<p>When the character was written successfuly, it returns number of character encoding units written to the file. When the function failed due to disk full or any error, a negative value will be returned.</p> 39</div> 40 41 42<div class="para desc"> 43<h4>Description</h4> 44<p>When FatFs is configured for Unicode API (<tt><a href="config.html#lfn_unicode">FF_LFN_UNICODE</a> >= 1</tt>), character encoding on the string fuctions, <tt>f_putc</tt>, <tt>f_puts</tt>, <tt>f_printf</tt> and <tt>f_gets</tt> function, is also switched to Unicode. The character encoding <em>on the file</em> to be read/written via those functions is selected by <tt><a href="config.html#strf_encode">FF_STRF_ENCODE</a></tt>. The Unicode characters in multiple encoding unit, such as surrogate pair and multi-byte sequence, cannot be written with this function.</p> 45</div> 46 47<div class="para comp"> 48<h4>QuickInfo</h4> 49<p>This is a wrapper function of <a href="write.html"><tt>f_write</tt></a> function. Available when <tt><a href="config.html#fs_readonly">FF_FS_READONLY</a> == 0</tt> and <tt><a href="config.html#use_strfunc">FF_USE_STRFUNC</a> >= 1</tt>. When <tt>FF_USE_STRFUNC == 2</tt>, a <tt>'\n'</tt> is output as <tt>'\r'+'\n'</tt>.</p> 50</div> 51 52 53<div class="para ref"> 54<h4>See Also</h4> 55<p><tt><a href="open.html">f_open</a>, <a href="puts.html">f_puts</a>, <a href="printf.html">f_printf</a>, <a href="gets.html">f_gets</a>, <a href="close.html">f_close</a>, <a href="sfile.html">FIL</a></tt></p> 56</div> 57 58<p class="foot"><a href="../00index_e.html">Return</a></p> 59</body> 60</html> 61